Insulating device



FIG. 1 is a top, front, left perspective view of an insulating device showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The uneven-length and even-length broken lines immediately adjacent to the shaded area represent unclaimed boundaries of the design. The contrast in shading represents a contrast in appearance only and does not represent any particular color, material, texture or finish. The broken lines showing the remainder of the insulating device are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for an insulating device, as shown and described. 